calendarmainclass.java

一个日期查询模板

import java.util.Calendar;
import javax.swing.*; 
import java.awt.*;
import java.awt.event.*;
 class CalendarBean 
{   int year=2004,month=0,nextDay;
   public void setYear(int year)
   {   this.year=year;
   }
   public int getYear()
   {   return year; 
   }
   public void setMonth(int month)
   {   this.month=month;
   }
   public int getMonth()
   {   return month; 
   }
   public String[][] getCalendar()
   {   String a[][]=new String[6][7];
      Calendar 日历=Calendar.getInstance();
      日历.set(year,month-1,1);
      int 星期几=日历.get(Calendar.DAY_OF_WEEK)-1;
      int day=0;
      if(month==1||month==3||month==5||month==7||month==8||month==10||month==12)
      {   day=31;
      } 
      if(month==4||month==6||month==9||month==11)
      {   day=30;
      }
      if(month==2)
      {   if(((year%4==0)&&(year%100!=0))||(year%400==0))
         {   day=29;
         }
         else
         {   day=28;
         }
      }
      nextDay=1;
      for(int k=0;k<6;k++)
      {   if(k==0)
            for(int j=星期几;j<7;j++)
            {   a[k][j]=" "+nextDay ;
               nextDay++;
            } 
          else
            for(int j=0;j<7&&nextDay<=day;j++)
            {   a[k][j]=""+nextDay ;
               nextDay++;
            } 
      } 
      return a;
   }
}
 class CalenderFrame extends JFrame implements ActionListener,ItemListener
{

   JComboBox list;  //声明下拉列表
   JTable table;
   Object name[]={ "星期日","星期一","星期二","星期三", "星期四","星期五","星期六"};
   JButton   nextMonth,previousMonth;
   int year=2004,month=5;
   CalendarBean calendar;
   String rili[][];
   JLabel showMessage=new JLabel("",JLabel.CENTER);
   JLabel shMessage=new JLabel("",JLabel.CENTER);
   JScrollPane scroll;
   int s[]={2006,2007,2008}; 
   public   CalenderFrame()
   {  list=new JComboBox();
      list.addItem("2006");
      list.addItem("2007");
      list.addItem("2008");
      list.addItemListener(this); //创建并赋植给下拉列表，并做监听
      calendar=new   CalendarBean();
      calendar.setYear(year);
      calendar.setMonth(month);
      rili=calendar.getCalendar();
      table=new JTable(rili,name);//使用数组rili和name创建table
      table.setRowSelectionAllowed(false); 
      nextMonth=new JButton("下月");
      previousMonth=new JButton("上月");
      nextMonth.addActionListener(this);
      previousMonth.addActionListener(this);
      JPanel    pNorth=new JPanel(),
            pSouth=new JPanel();
      pNorth.add(previousMonth);
      pNorth.add(nextMonth);
      pSouth.add(showMessage);
      showMessage.setText("日历：");
      pSouth.add(list);
      pSouth.add(shMessage);
      shMessage.setText("年"+calendar.getMonth()+"月" );//添加下拉列表到面板上。
      scroll=new JScrollPane(table);
      getContentPane().add(scroll,BorderLayout.CENTER); 
      getContentPane().add(pNorth,BorderLayout.NORTH);
      getContentPane().add(pSouth,BorderLayout.SOUTH);
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      setBounds(100,100,400,240); 
      setVisible(true);
      validate();
   } 
 public void actionPerformed(ActionEvent e)
   {   if(e.getSource()==nextMonth)
      {   month=month+1;
         if(month>12)
            month=1;
         calendar.setMonth(month);
         rili=calendar.getCalendar();
         remove(scroll);
         table=new JTable(rili,name);//使用数组rili和name创建table
         table.setRowSelectionAllowed(false);
         scroll=new JScrollPane(table);
         getContentPane().add(scroll,BorderLayout.CENTER); 
      }
      else if(e.getSource()==previousMonth)
      {   month=month-1;
         if(month<1)
            month=12;
         calendar.setMonth(month);
         rili=calendar.getCalendar();
         remove(scroll);
         table=new JTable(rili,name);//使用数组rili和name创建table
         table.setRowSelectionAllowed(false);
         scroll=new JScrollPane(table);
         getContentPane().add(scroll,BorderLayout.CENTER); 
      }
       shMessage.setText("年"+calendar.getMonth()+"月" );
   }
 public void itemStateChanged(ItemEvent e)
 { 
   if(e.getSource()==list) 
   { year=s[list.getSelectedIndex()];   
         calendar.setYear(year);
         calendar.setMonth(month);
         rili=calendar.getCalendar();
         remove(scroll);
         table=new  JTable(rili,name);        
table.setRowSelectionAllowed(false);
         scroll=new JScrollPane(table);
         getContentPane().add(scroll,BorderLayout.CENTER); 
         setVisible(true);
           //下拉列表的处理事件的接口程序，作为发生的相应事件，将年份重新赋值
   }
 }
} 
 class CalendarMainClass
{   public static void main(String args[])
   {   new CalenderFrame();
   }
}